VSC-HVDC PI参数的系统级优化研究Research on Combined Optimization of PI Parameters for VSC-HVDC
李冲,袁敏,李红日,史迪锋
LI Chong,YUAN Min,LI Hongri,SHI Difeng
摘要(Abstract)：
以海上风电厂为代表的柔性直流输电系统近年来得到了大力发展。柔性直流输电系统包含整流侧和逆变侧以及直流输电线路,控制器参数的确定对整个系统都有很大影响,现阶段整流侧和逆变侧控制系统参数都是单独整定,因此无法得到系统级的最优参数。在直流输电线路等效模型基础上,建立了系统传递函数,根据时间乘绝对误差积分(ITAE)准则,利用粒子群算法进行了多目标下的系统级参数优化。仿真结果验证了系统传递函数以及优化算法的有效性和正确性。
VSC-HVDC system such as offshore wind farm is widely used in recent years. VSC-HVDC system consists of rectifier side, inverter side and DC transmission lines. The determination of controller parameters has great impact on the whole system. Parameter settings of control system at rectifier side and inverter side are done separately, and thus the system-level optimal parameter can not be concluded. Based on the equivalent model of DC transmission lines, system transfer function is established. According to the integrated time absolute error criterion(ITAE), system-level parameter optimization under multiple objectives is conducted by particle swarm optimization. The simulation result shows that the system transfer function and optimization algorithm are effective and correct.
关键词(KeyWords)：
柔性直流输电;解耦模型;参数优化;粒子群优化
VSC-HVDC;decoupling model;parameter optimization;particle swarm optimization
基金项目(Foundation):
作者(Author):
李冲,袁敏,李红日,史迪锋
LI Chong,YUAN Min,LI Hongri,SHI Difeng
DOI: 10.19585/j.zjdl.201709007
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